Expand ("E")   Collapse

Age: 64

Sex: Female

Indication: New onset daily headache

Choroid Plexus in the Temporal Horns

Mimicking Subarachnoid Hemorrhage



Findings Relating to the Mimic

  • Areas of high density within the temporal horns of the lateral ventricles bilaterally, which have attenuation values up to 150 Hounsfield units compatible with physiologic calcifications of the choroid plexus in these regions.


Discussion

  • Usually choroid is easy to differentiate from hemorrhage given the characteristic location and physiologic calcification.  Using bone windows and measuring point value attenuation may help you confidently identify calcification associated with choroid.
  • Choroid plexus is also found in the foramina of Luschka, along the posterior medullary velum of the fourth ventricle, and along the roof of the third ventricle.


Images

Stippled hyperdensity in bilateral temporal horns (more prononced on the left), compatible with physiologic calcification of choroid plexus.

📣 Feedback?

⌨️  Keyboard Shortcuts ("K")
Related Cases
None
References
  • None.

⌨️ Keyboard Shortcuts

View shortcuts

Zoom/Pan

  Full screen

  Window/Level

  Expand/collapse

  Scroll

  Save the case

  Close case/tab

Previous Slice (Scroll)

Next Slice (Scroll)

 Toggle presets

 Previous series (if multiple)

 Next series (if multiple)

  Previous case (⌘ ◄ on a mac)

  Next case (⌘ ► on a mac)